• Question: Why do men have nipples?

    Asked by 635erbb43 to Hephzi, Imogen, Jen, Tom on 18 Mar 2015.
    • Photo: Thomas Barrett

      Thomas Barrett answered on 18 Mar 2015:

      For the first several weeks a developing embryo follows a “female blueprint,” from reproductive organs to nipples meaning we all start life out as girls!

      Only after about 60 days does the hormone testosterone kick in (for those of us with a Y chromosome), changing the genetic activity of cells in the genitals and brain. This means the nipples are left over from when we were female for 60 days.

    • Photo: Hephzi Tagoe

      Hephzi Tagoe answered on 18 Mar 2015:

      I was going to research this but looks like Tom’s got it. Females rock (we all start life as girls)!. 🙂

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